1405404629 has 2 divisors, whose sum is σ = 1405404630. Its totient is φ = 1405404628.

The previous prime is 1405404593. The next prime is 1405404631. The reversal of 1405404629 is 9264045041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 863772100 + 541632529 = 29390^2 + 23273^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405404629 - 2¹⁶ = 1405339093 is a prime.

Together with 1405404631, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1405404829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702702314 + 702702315.

It is an arithmetic number, because the mean of its divisors is an integer number (702702315).

Almost surely, 2^1405404629 is an apocalyptic number.

It is an amenable number.

1405404629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405404629 is an equidigital number, since it uses as much as digits as its factorization.

1405404629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1405404629 is about 37488.7266921671. The cubic root of 1405404629 is about 1120.1266409201.

The spelling of 1405404629 in words is "one billion, four hundred five million, four hundred four thousand, six hundred twenty-nine".